refactor project structure

db/util_test.go

@@ -0,0 +1,33 @@
+package db
+
+import (
+	"github.com/hdt3213/godis/datastruct/dict"
+	"github.com/hdt3213/godis/datastruct/lock"
+	"math/rand"
+)
+
+func makeTestDB() *DB {
+	return &DB{
+		data:   dict.MakeConcurrent(1),
+		ttlMap: dict.MakeConcurrent(ttlDictSize),
+		locker: lock.Make(lockerSize),
+	}
+}
+
+func toArgs(cmd ...string) [][]byte {
+	args := make([][]byte, len(cmd))
+	for i, s := range cmd {
+		args[i] = []byte(s)
+	}
+	return args
+}
+
+var letters = []rune("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789")
+
+func RandString(n int) string {
+	b := make([]rune, n)
+	for i := range b {
+		b[i] = letters[rand.Intn(len(letters))]
+	}
+	return string(b)
+}